View eua2011 datasheet:

 EUA2011 3-W Mono Filterless Class-D Audio Power Amplifier DESCRIPTION FEATURES The EUA2011 is a high efficiency, 3W mono class-D audio Unique Modulation Scheme Reduces EMI Emissions power amplifier. A low noise, filterless PWM architecture Efficiency at 3.6V With an 8-Ω Speaker: eliminates the output filter, reducing external component - 88% at 400 mW count, system cost, and simplifying design. - 80% at 100 mW Operating in a single 5V supply, EUA2011 is capable of Low 2.4-mA Quiescent Current and driving 4Ω speaker load at a continuous average output of 0.5-µA Shutdown Current 3W/10% THD+N or 2W/1% THD+N. The EUA2011 has 2.5V to 5.5V Wide Supply Voltage high efficiency with speaker load compared to a typical Shutdown Pin Compatible